The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1998
Filed:
Feb. 10, 1997
Yasuhiro Yamamoto, Kasugai, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
A sense amplifier including a presense amplifier and a main sense amplifier. The presense amplifier detects a potential difference between a pair of bit lines based on information read from memory cells and outputs a pair of current signals in accordance with the detected potential difference. The main sense amplifier amplifies the pair of current signals from the presense amplifier to output a first pair of voltage signals. The main sense amplifier provides an output current which allows the first pair of current signals to flow through the presense amplifier. The main sense amplifier includes a current supply circuit for outputting a second pair of current signals based on the amount of the first pair of current signals output from the presense amplifier, and a converting circuit for converting the second pair of current signals from the current supply circuit to voltage signals and outputting the voltage signals.